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1、TheProgressintheMilkFatGlobuleMembraneAbstract：Butyrophilin,XORandthesurfacegrowthfactor8ofthemilkfatglobulearethethreekindsofmajormembraneproteinsofmilkfatglobulemembrane.ThisreviewfocusesoncurrentresearchrelatingtothecompositionandstructureofMFGM,andinteractionsofMFGMwithskim
2、milkproteinsduringheattreatments^1.VariousmethodsofisolatingMFGM,reportedintheliterature,arereviewedandevaluatedfortheirpotentialtoproduceMFGMingredientsforfoodapplications121.Keywords:Fatglobules;Milkfatglobulemembrane;MFGMproteinsIntroductionManypropertiesofdairyproducts,e.g.
3、theirstabilityandacceptability,aredeterminedbytheresponsesoftheMFGMcomponentstothesetreatments.Thus,anunderstandingofthisuniquemembranesystemisimportantforproducingdairyproductswithconsistentproperties[3].Thenaturalfatglobulesinmilkarecoatedwithaprotectivelayergenerallyknownast
4、hemilkfatglobulemembrane(MFGM).Milkfatisamajorcomponentofmilk,thecontentisgenerallyaccountedfor3%to5%,andtheflavorofmilkplaysanimportantinfluence.MilkfattoDispersedintheformoffatglobulesinthemilkwasobservedunderamicroscopefortheballSphercalorellipticalshape,thesurfaceiscoveredw
5、ithafilmof5~10nm〔4lTheMFGMiscloselyinvolvedinnaturalprocessesinmilk(e.g.creamingandagglutination)andismarkedlyaffectedbytreatments,suchascooling,heating,andhomogenizationofdairyproducts⑸.1.CompositionandstructureofMFGMTheamountandthecompositionofMFGMcanvaryconsiderablydepending
6、onboththefatcontentandthefatglobulesize,whichare,inturn,affectedbyseveralfactors,suchasdiet,breed,healthandstageoflactationofcows.Forinstance,smallfatglobules,becauseoftheirlargesurfacearea,accountforalargeproportionofthetotalMFGMmaterial.Inaddition,milkhandlingproceduresduring
7、andaftermilkharvesting,e.g.aging,agitation,airinclusion,temperaturechangesandheattreatments,mayaffectthecompositionofMFGM⑹.Thetotalmassoffatglobulesthatisaccountedforbymembranematerialhasnotbeendeterminedwithcertainty.Anestimatedmassofthemembraneis2-6%ofthatofthetotalfatglobule
8、s.Proteinsandphospholipidstogetheraccountforover90%oft
